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aquaticvacation52 ยท 9 years
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The chances of actually snapping a Tarpon in mid-air are fairly remote...you should see the number of photos of empty splashes that I've taken.
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aquaticvacation52 ยท 9 years
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A Guide To UK Fire Doors
What is a fire door?
Put simply, it's a door that is designed to stop a fire spreading. When used as part of a property's protection scheme it will reduce the spread of fire through a building this allowing the occupants to escape safely.
Fire doors are fitted with an intumescent strip along the sides and top of the door or door frame. This seal lies dormant during normal use, but expands with extreme heat eliminating the gap between the door and its frame and thus forming a barrier against fire and noxious fumes.
Fire doors are supplied in a range of ratings that indicate how long the door can withstand heat and flames. The minimum rating is FD30, offering 30 minutes fire resistance. Higher specification FD60 doors are also available if required, although these are normally used in areas frequented by the general public, such as hotels or schools.
FD30 doors, be they glass, semi-glazed, panel or flush are usually 45mm thick, as opposed to the standard door thickness of 35 mm, there is absolutely no point if fitting fire door frames if you then fit a standard internal non-fire door.
FD60 (60 minute) fire doors are not cheap fire doors due to their lack of choice and the required construction methods, they are most commonly used in commercial settings and are normally 54mm thick. Specially constructed fire doors can attain ratings of 4 hours or more, provided that the door is fitted with ALL of the correct door fittings such as hinges.
Most fireproof doors have a solid core construction which might consist of particleboard, chipboard, flaxboard, solid timber or a combination of those materials. There is no preferred or regulated construction method and no need for one as long as the desired fire rating is achieved. The construction can vary considerably, some doors have a timber framing around the core with a laminated veneer, others have a lipping (5-20mm thick) around the core with a veneer on top and in some cases a plywood, veneer or MDF facing is glued on to the core without framing or lipping's.
The material from which the fire door frames are constructed (e.g. softwood, hardwood or MDF), as well as its section sizes must comply with the required standards. Furthermore, essential hardware (ironmongery) must also have its own individual test evidence to show fitness for purpose.
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